Hop plant named &#39;HORT9909&#39;

ABSTRACT

A new and distinct hop plant is described. The cultivar results out of selection from a population of seedlings derived from the deliberate crossing ‘Hersbrucker Pure’ (seed parent) (not patented) and 97.72-09 (pollen parent) (not patented). The new variety, ‘Hort9909’, is characterised by its cones maturing mid-season and having medium Alpha Acid and low cohumulone content. The new variety is suitable for beer flavouring.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of U.S. Provisional Application No. 62/596,294 filed Dec. 8, 2017.

Genus and species of plant claimed: Humulus lupulus L.

Variety denomination: ‘Hort9909’.

BACKGROUND OF THE INVENTION

The new cultivar of hop, Humulus lupulus L., was created in the course of a planned breeding program carried out at Motueka, New Zealand. It was selected from a population of seedlings derived from a cross made in 2004 between ‘Hersbrucker Pure’ (seed parent) (not patented) and 97.72-09 (pollen parent) (not patented). Seedlings from the cross were grown in a nursery at the same location during the 2004-5 season and subsequently planted in the field in 2005-06 season. In 2006, ‘Hort9909’ was identified as having potential as a new variety and given the breeder code 04.99-09. The variety was selected on the basis of its good agronomic performance, and chemistry profile.

SUMMARY OF THE INVENTION

A new and distinct hop plant is described. ‘Hort09909’ cultivar is characterised by having cones which are mid-season maturing and medium alpha acid and low cohumulone content. The new variety is suitable for beer flavouring.

In 2008-09, ‘Hort9909’ was asexually propagated via rhizome cuttings at Motueka, New Zealand. The resulting plants were found to be true to type demonstrating that the characteristics of the new variety ‘Hort9909’ are stable and transmitted without change through succeeding generations.

For three seasons, from 2009/10 to 2011/2012 ‘Hort9909’ was trialled, for its commercial potential in a replicated plot trial. In 2012, it was decided to advance ‘Hort9909’ to larger-scale trialling, including brewing trials due to its agronomic and chemistry properties. Brewing trials were conducted over several seasons from 2012/13 to 2016/2017.

‘Hort9909’ is maintained at Motueka, New Zealand, where it has undergone observations for uniformity. All plants have been found to be true to type, that is, no off types have been observed. ‘Hort9909’ is distinguished from its parent female parent, ‘Hersbrucker Pure’ as ‘Hort09909’ has longer lateral cane length. The pollen parent, 97.72-09, is a male and thus does not produce cones. Under New Zealand growing conditions ‘Hort9909’ is distinguished from varieties of common knowledge by the following characteristics:

When grown in Motueka ‘Hort9909’ has stronger and earlier spring growth than ‘Hort3829’. The cones of ‘Hort9909’ mature earlier than ‘Rakau’, Sticklebract’ and Dr’Rudi’ and are narrow ovate in shape where cones of ‘Southern Cross’ are cylindrical.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying photographs show typical specimens of the plant habit, cones, and leaves of the new cultivar as depicted in colours as nearly true as is reasonably possible to make the same in colour illustration of this character.

FIG. 1: close up of ‘Hort9909’ main shoot.

FIG. 2: ‘Hort9909’ cones in the studio.

FIG. 3: Upper and underside of ‘Hort9909’ leaf

FIG. 4. Mean of at harvest chemistry profiles for ‘Hort9909’, ‘Wakatu’ and ‘Motueka’.

Trials and testing were conducted in Motueka, New Zealand.

BOTANICAL DESCRIPTION

The following is a description of the new cultivar with colour terminology in accordance with The Royal Horticultural Society Colour Charts (R.H.S.C.C.) 2001 edition. The specimens described were grown at Motueka, New Zealand. The observations were made over the 2014-2017 seasons.

-   Plant form and vigour: Mature plants of had normal growth type and     produced a yield (averaging 1.8-2.2 tonnes/ha,) of mid-season     maturing cones. The plant shape was cylindrical with a medium head     volume. The main shoot of a one year old plant, had an average vine     diameter half way up the vine of 8 mm, and anthocyanin coloration of     the stem was weak or almost absent. Node pubescence was weak. The     average internode length was 200 mm. -   Laterals: The side shoots from the middle third of the plant were     medium to long in length, an average of approximately 75 cm, and     produced a medium number of cones, an average of 3 per node. The     side shoots from the top third of the plant had an average length of     75 cm and produced an average of 30 cones per lateral. -   Leaves: The leaves were lobed with predominantly five lobes. The     large, weakly blistered leaves were alternate with crenate margins.     The upper leaf surface colour was near, Green, 139A and the     intensity of colour light to medium. The average leaf size was 139     mm in length and 165 mm in width. -   Cones: were medium-large in size and narrow-ovate in shape in     longitudinal section; in cross section they were square in shape.     The cones average length was 44 mm and average width 23 mm. Bracts     were medium in size, with an average length 16 mm and average width     11 mm, slightly open and had a short apex. Bracteole had an average     length of 17 mm and average width 10 mm. Strigs were long,     approximately 25 mm, with an average width of 3 mm. The colour of     the strig was Green, near N143D. -   Physiological timing: Flowering commences late in Motueka, New     Zealand around the 26 January. Harvest is mid-season in the New     Zealand season, commencing mid to late March, under normal     conditions. -   Chemistry profile: ‘Hort9909’ has undergone extensive chemistry     profile testing. ‘Hort'9909’ has Alpha Acid levels of around 7-9.5%,     Beta Acid levels of around 3-4% and Cohumulone levels around 24-25%. -   Use: primarily flavouring and bittering ingredient for beer. -   Pest and disease: ‘Hort9909’ does not appear particularly resistant     or susceptible to any particular pests or diseases known to afflict     Humulus lupulus. -   Hardiness: The plant cold hardiness according to the American zone     classification has not been determined. 

1. A new and distinct hop plant substantially as described and illustrated herein. 